* {
  margin: 0;
  padding: 0;
}
/* body {
  background-color: black;
} */
#oBox {
  width: 452px;
  height: 580px;
  /* background: rgb(138, 170, 102); */
  /* border: 1px solid #aaaa ; */
  margin-top: 100px;
  margin-left: 200px;
}
.small {
  width: 450px;
  height: 450px;
  border: 1px solid #aaaa;
  position: relative;
}
.mask {
  width: 281.25px;
  height: 281.25px;
  background: rgba(255, 255, 0, 0.226);
  position: absolute;
  /* position: relative; */
  top: 0;
  left: 0;
}

.small img {
  position: relative;
  /* margin-bottom: 2rem; */
}

.list {
  width: 450px;
  height: 58px;
  position: relative;
  top: 0;
  left: 0;
  margin-top: 2rem;
}
.list #oList_d a.arrow-prev {
  display: block;
  width: 22px;
  height: 32px;
  float: left;
  position: absolute;
  cursor: pointer;
  top: 25%;
  opacity: 0.7;
}
.list #oList_d a.arrow-next {
  display: block;
  width: 22px;
  height: 32px;
  float: right;
  position: absolute;
  cursor: pointer;
  top: 25%;
  opacity: 0.5;
  right: 0;
}
.list #oList_d a.arrow-prev:hover {
  opacity: 1;
}
.list #oList_d a.arrow-next:hover {
  opacity: 1;
}
.list #oList_d .arrow-prev .arrow-left {
  display: block;
  width: 22px;
  height: 32px;
  background-image: url("../img/left.png");
  position: relative;
  left: 10px;
}

.list #oList_d .arrow-next .arrow-right {
  display: block;
  width: 22px;
  height: 32px;
  background-image: url("../img/right.png");
  position: relative;
  right: 10px;
}
#oList_u_box {
  position: relative;
  width: 380px;
  height: 58px;
  overflow: hidden;
  margin: 0 auto;
}
oList_u_box ul li img {
  width: 54px;
  height: 54px;
}
#oList_u {
  position: absolute;
  width: 532px;
  height: 58px;
  top: 0px;
  left: 0px;
  list-style-type: none;
}
#oList_u #oList_u_l {
  float: left;
  height: 54px;
  margin: 0 9px;
  border: 2px solid transparent;
}
#oList_u #oList_u_l:hover {
  border: 2px solid red;
}
.big {
  width: 500px;
  height: 500px;
  border: 1px solid #717171;
  position: relative;
  top: -542.2px;
  left: 451.2px;
  overflow: hidden;
}
.big img {
  position: relative;
  top: 0;
  left: 0;
}